CVE-2025-62365: Librenms/librenms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-86rg-8hc8-v82p
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CWE-79
Published
Advisory Summary

CVE-2025-62365 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Librenms/librenms libraries in the Packagist ecosystem. The issue involves librenms is vulnerable to reflected-xss in `report_this` function. Remediation is available by upgrading affected packages to version 25.7.0.

CVE-2025-62365 at a Glance

CVE Identifier CVE-2025-62365
GHSA Identifier GHSA-86rg-8hc8-v82p
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Librenms/librenms
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2025-62365

To remediate this vulnerability, upgrade all affected Librenms/librenms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

librenms/librenms fixed: 25.7.0 
Upgrade librenms/librenms to 25.7.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for librenms/librenms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-62365, inspect your project dependencies for Librenms/librenms:

inspect dependencies for librenms/librenms

Analyze the terminal output to locate any version of Librenms/librenms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 25.7.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Librenms/librenms, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary Reflected-XSS in `report_this` function in `librenms/includes/functions.php` ### Details Recently, it was discovered that the `report_this` function had improper filtering (`htmlentities` function was incorrectly used in a href environment), which caused the `project_issues` parameter to trigger an XSS vulnerability. The Vulnerable Sink: https://github.com/librenms/librenms/blob/master/includes/functions.php#L444 ### PoC GET `project_issues=javascript:alert(document.cookie)` ### Impact XSS vulnerabilities allow attackers to execute malicious scripts in users' browsers, enabling unauthorized access to sensitive data, session hijacking, or malware distribution. ### Suggestion It is recommended to filter dangerous protocols, e.g. `javascript:`/`file:`.

CVE-2025-62365 Affected Librenms/librenms Versions

1 component(s)
Fixed Versions:
25.7.0
Product / Package Ecosystem Affected Versions Fixed Version
librenms/librenms
 Packagist
< 25.7.0
25.7.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/librenms/librenms/security/advisories/GHSA-86rg-8hc8-v82p
NVD — CVE-2025-62365 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62365
Security Fix Commit FIX COMMIT
https://github.com/librenms/librenms/commit/30d3dd7e5f5e22a8c23c9db3ad90a731c005b008
Librenms/librenms Source Repository REPOSITORY
https://github.com/librenms/librenms

Frequently Asked Questions

What is CVE-2025-62365?
CVE-2025-62365 is a security vulnerability in Librenms/librenms involving LibreNMS is vulnerable to Reflected-XSS in `report_this` function under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Librenms/librenms versions are affected?
Affected versions include releases prior to 25.7.0 across affected packages: librenms/librenms.
What version fixes CVE-2025-62365?
Upgrading to 25.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is librenms/librenms affected?
Yes, librenms/librenms is affected in releases prior to 25.7.0. Upgrade your dependency to 25.7.0 or later.
What CWE is associated with CVE-2025-62365?
CVE-2025-62365 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-62365?
Run the dependency tree command: 'inspect dependencies for librenms/librenms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-86rg-8hc8-v82p",
  "modified" : "2025-10-14T00:55:38Z",
  "published" : "2025-10-13T22:11:25Z",
  "aliases" : [ "CVE-2025-62365" ],
  "summary" : "LibreNMS is vulnerable to Reflected-XSS in `report_this` function",
  "details" : "### Summary\nReflected-XSS in `report_this` function in `librenms/includes/functions.php`\n\n### Details\nRecently, it was discovered that  the `report_this` function had improper filtering (`htmlentities` function was incorrectly used in a href environment), which caused the `project_issues` parameter to trigger an XSS vulnerability.\n\nThe Vulnerable Sink:\nhttps://github.com/librenms/librenms/blob/master/includes/functions.php#L444\n\n### PoC\nGET\n`project_issues=javascript:alert(document.cookie)`\n\n### Impact\nXSS vulnerabilities allow attackers to execute malicious scripts in users' browsers, enabling unauthorized access to sensitive data, session hijacking, or malware distribution.\n\n### Suggestion\nIt is recommended to filter dangerous protocols, e.g. `javascript:`/`file:`.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "librenms/librenms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "25.7.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 25.6.0"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/security/advisories/GHSA-86rg-8hc8-v82p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-62365"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/librenms/librenms/commit/30d3dd7e5f5e22a8c23c9db3ad90a731c005b008"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/librenms/librenms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-13T22:11:25Z",
    "nvd_published_at" : "2025-10-13T22:15:34Z"
  }
}